flowchart LR
  subgraph "Your Computer"
    Host["MCP Host (e.g., Claude Desktop, IDEs)"]
    S1["MCP Server A"]
    S2["MCP Server B"]
    S3["MCP Server C"]
    D1["Local Data Source A"]
    D2["Local Data Source B"]
    Host -->|MCP Protocol| S1
    Host -->|MCP Protocol| S2
    Host -->|MCP Protocol| S3
    S1 <--> D1
    S2 <--> D2
  end

  subgraph "Internet"
    D3["Remote Service C"]
    S3 <--> D3
  end
